Grades are a hygiene check, not a security guarantee.

MCP, MCP server

hippocamp

Tiered memory for AI — episodes, facts, preferences, reflections.

Compatibility: Not stated.

Grade C

One Medium finding. Read the report before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

PERMISSION_SHELL_UNDECLARED

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

    Runs shell commands that the manifest or description does not mention.

    src/hippocamp/setup.py, line 234 proc = subprocess.run(args, capture_output=True, text=True)

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Concern

    requests shell access. No manifest field names shell or command execution.

    PERMISSION_SHELL_UNDECLARED

    src/hippocamp/setup.py, line 234

    proc = subprocess.run(args, capture_output=True, text=True)

    src/hippocamp/sync.py, line 101

    proc = subprocess.run(

    src/hippocamp/sync.py, line 115

    proc = subprocess.run(

  • Install and update

    Note

    The docs document an installer that pipes a download into a shell.

    INSTALL_DOCUMENTED_INSTALLER

    scripts/install.sh, line 5

    # curl -sSL https://hippocamp.run/install | bash # default: claude, local store

    scripts/install.sh, line 6

    # curl -sSL https://hippocamp.run/install | bash -s -- claude # specify host

    scripts/install.sh, line 7

    # curl -sSL https://hippocamp.run/install | bash -s -- claude ~/Dropbox/Hippocamp

  • Network

    Pass

    No network call found.

  • Secrets

    Note

    reads an environment variable.

    SECRETS_ENV_READ

    src/hippocamp/mcp_server.py, line 215

    if os.environ.get("ANTHROPIC_API_KEY"):

    src/hippocamp/reflect.py, line 343

    api_key = os.environ.get("ANTHROPIC_API_KEY")

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    uv.lock, line 1

    version = 1

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit b3940c214554. requests shell access. No manifest field names shell or command execution. The docs document an installer that pipes a download into a shell. reads an environment variable. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: b3940c214554404193db909bf44f38c9b7f7d8f2

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen